That worked for me also, it flipped over to Summer.
But I am have this warning now.
"Warning: Undefined variable $dateJunSolstice in" (Line 340)
case ($date< $dateMarEqu ): $currentSeason = $SITE['latitude' ]<0 ? 'Zomer' : 'Winter'; break;
case ($date< $JunSolstice ): $currentSeason = $SITE['latitude' ]<0 ? 'Herfst' : 'Lente'; break;
case ($date< $dateSepEqu ): $currentSeason = $SITE['latitude' ]<0 ? 'Winter' : 'Zomer'; break;
case ($date< $DecSolstice ): $currentSeason = $SITE['latitude' ]<0 ? 'Lente' : 'Herfst'; break;
As you can see my line reads $JunSolstice, not $JunSol.
include-wxastronomy version 1.11 of 07 May 2023.